Implement a paint offset cache for slimming paint v2

Source/core/paint/VideoPainter.cpp

Index: Source/core/paint/VideoPainter.cpp
diff --git a/Source/core/paint/VideoPainter.cpp b/Source/core/paint/VideoPainter.cpp
index e57d702546b8a2e3f204d8cf3f87c9896b06a328..2aa540ba7ea1af5ed1bcb57ced271ccdae275f3f 100644
--- a/Source/core/paint/VideoPainter.cpp
+++ b/Source/core/paint/VideoPainter.cpp
@@ -39,10 +39,10 @@ void VideoPainter::paintReplaced(const PaintInfo& paintInfo, const LayoutPoint&
         clipRecorder.emplace(*context, m_layoutVideo, paintInfo.phase, FloatRect(contentRect));
     }
 
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*context, m_layoutVideo, paintInfo.phase))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*context, m_layoutVideo, paintInfo.phase, paintOffset))
         return;
 
-    LayoutObjectDrawingRecorder drawingRecorder(*context, m_layoutVideo, paintInfo.phase, contentRect);
+    LayoutObjectDrawingRecorder drawingRecorder(*context, m_layoutVideo, paintInfo.phase, contentRect, paintOffset);
 
     if (displayingPoster) {
         ImagePainter(m_layoutVideo).paintIntoRect(context, rect);